LXR linux/arch/powerpc/include/asm/mediabay.h

   1/*
   2 * mediabay.h: definitions for using the media bay
   3 * on PowerBook 3400 and similar computers.
   4 *
   5 * Copyright (C) 1997 Paul Mackerras.
   6 */
   7#ifndef _PPC_MEDIABAY_H
   8#define _PPC_MEDIABAY_H
   9
  10#ifdef __KERNEL__
  11
  12#define MB_FD           0       /* media bay contains floppy drive (automatic eject ?) */
  13#define MB_FD1          1       /* media bay contains floppy drive (manual eject ?) */
  14#define MB_SOUND        2       /* sound device ? */
  15#define MB_CD           3       /* media bay contains ATA drive such as CD or ZIP */
  16#define MB_PCI          5       /* media bay contains a PCI device */
  17#define MB_POWER        6       /* media bay contains a Power device (???) */
  18#define MB_NO           7       /* media bay contains nothing */
  19
  20struct macio_dev;
  21
  22#ifdef CONFIG_PMAC_MEDIABAY
  23
  24/* Check the content type of the bay, returns MB_NO if the bay is still
  25 * transitionning
  26 */
  27extern int check_media_bay(struct macio_dev *bay);
  28
  29/* The ATA driver uses the calls below to temporarily hold on the
  30 * media bay callbacks while initializing the interface
  31 */
  32extern void lock_media_bay(struct macio_dev *bay);
  33extern void unlock_media_bay(struct macio_dev *bay);
  34
  35#else
  36
  37static inline int check_media_bay(struct macio_dev *bay)
  38{
  39        return MB_NO;
  40}
  41
  42static inline void lock_media_bay(struct macio_dev *bay) { }
  43static inline void unlock_media_bay(struct macio_dev *bay) { }
  44
  45#endif
  46
  47#endif /* __KERNEL__ */
  48#endif /* _PPC_MEDIABAY_H */
  49